March 2023
Beginner to intermediate
266 pages
4h 30m
Chinese
Content preview from FinOps云成本优化
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39
第 5 章
对云账单的剖析
本章将研究公有云服务计费的基本原理，以及这些费用在账单数据中的体现形式。理解
云账单是
FinOps
生命周期后续成本分配与优化的云环节的关键。与云支出相关的组织
架构决定了特定的优化操作由谁来执行，以及
FinOps
相关工作委派给谁。
我们不拘泥于单一的计费项目，而是比较公司对各云资源之间计费的细微差别。只有怀
揣这种理念，
FinOps
实践者才能撰写出有效报告，帮助所有团队理解云账单。
云计费的复杂性
云账单数据非常复杂。仅
AWS
一家公司就有超过
20
万个产品库存单位（
SKU
），其中
部分产品甚至按秒计费。这些数据经由每日多次更新，与实例运行时长、存储大小及数
据传输等消耗所产生的费用存在着复杂的联系。我们见到的某些大型云客户每月支出高
达数十亿美元。
市场上有些平台能够代替公司处理复杂的云计费，团队中也至少需要一位深入了解数据
的
FinOps
实践者。这不仅有助于公司其他团队理解和分析账务信息，也更容易让团队
解释来自
FinOps
平台的数据和相关推荐。
财务部门看到的发票数据可能会与正在分析的详细账单信息（例如
AWS
成本与使用情
况报告）有出入。一个架构良好的
FinOps
平台中的实践者能在每月的发票对账中保持
两者数据一致，但发票所应用的分期付款、混合费率或承诺使用折扣的粒度级别可能仍
与服务或账户
/
订阅级别的详细账单数据不同。因此，团队应该尽早设定期望值，即只
用发票记录应付账款数据，而非分析云支出。
通过发票上显示的每月详细信息与云服务等级，我们得以确定服务背后的成本驱动因素。
AW
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